Hi,
I'm considering building the unit below. I don't know what it's called but the large coil resembles that used on PEMF devices.
I snagged these pics years ago from a Yahoo group library (I believe the group is defunct as I can't find it). The photo is from a unit that Robb Allen was selling.
Additionally, there's a description of how to assemble it at http://onibasu.com/archives/km/41492.html. But it only gives so much information to work with.
Robb also sold an MPM2 device and another (which was posted for sale on CureZone):
I have a SOTA Magnetic Pulser MP5 and it's been doing a fine job for over a decade. (Kudos to SOTA Instruments for making such a rock solid device!) But it hasn't put a dent in low back or shoulder pain. After watching videos on some of the PEMF devices and hearing the incredible testimonials such as the ones below, it seemed that PEMF devices were, for a lack of better words, magnetic pulsers on steroids.
Dr OZ PEMF Video QRS
https://www.youtube.com/watch?v=WLD2cr5htbs
QRS vs MRS2000 Review Part 1 - Dr Ted Banko - Banko Chiropractic
https://www.youtube.com/watch?v=koQU3CKZnEw
But before I start purchasing parts, I have a few questions for anyone familiar with this.
1) Is it stronger than the SOTA Mag Pulser? Or the Klemens Super T Magnetic Pulser or Super Magnetic Pulser? (I know I may be comparing apples to oranges but I don't want to spend money I don't have to throw away to find out that it's just akin to, or slightly stronger, than the SOTA Mag Pulser.)
2) Does it have an effect similar to a commercial PEMF device? Meaning, can it tackle really stubborn aches and pains?
3) Does anyone have more detailed instructions/specifications?
4) What is the best kind of solenoid, horn switch, and battery type?
5) Does 4.7k represent a resistor?
6) If the horn switch is a manual way to pulse the unit, how long does one have to wait before pushing it?
7) Is there an alternative to using batteries? Some kind of a/c to d/c adapter or convertor. I know that when I've recharged car batteries in my basement, it set off the carbon monoxide detector. Not a good thing. Not to mention that the fumes are flammable. There must be something to replace the battery with since the commercial PEMF devices don't rely on car batteries.
8) How many hours of optimal usage will a new, strong battery provide between charges?
I think that covers it. Thanks.
Paul
Here's another interesting testimonial video for the healing benefits of PEMF machines.
Hi Esstee,
My apologies. I didn't get an email notification that you (or jaguar57) had joined the discussion. But thank you very much for joining. (Two heads are always better than one!)
Right after I posted this (and finally got the photos fixed), I put some feelers out to the Microelectricity Yahoo group (now called Batteries vs Germs) and to a friend who's bigtime into electromedicine. The responses from someone who actually built the device in the schematic and my friend has kept me mega busy looking into all the variables and options. And there doesn't seem to be any end in sight. This is very exciting stuff!
I hope to get back with you soon with some of the things I've found.
And thank you for the links! I will comment on them when I can.
Paul
Hello Esstee,
First off, I'd like to reiterate that I am a total noob to all this. (Though I am a seasoned computer tech.) Hopefully as we put our heads together (i.e., pool our ignorance), we'll be able to learn how to build some effective DIY mag pulsers. And perhaps others (like jaguar57) will correct me where I'm wrong and offer some tips to help shorten our learning curve and expenditures.
Regarding your previous posts...
Dr. Garry Gordon makes a great case for the need, science behind, and benefits of PEMF. Any Big Pharma brainwashed drug pusher (aka doctor) who thinks PEMF therapy is quackery will have to contend with the likes of Dr. Gordon.
This video...
Simple PEMF AC from Ipod, TV coil @ 30 watts
...is very similar to one I came across earlier:
Ultrasonic Magnetic Pulser Using Android Tablet As Frequency Generator
I liked yours because it showed the audio amp and how everything hooked up. I was surprised at how simple it is to setup.
When I first saw it, it made me think that this could be a good alternative to the large unit that I pictured in my original post. I think you're spot on with taking this approach.
I didn't know what value there was to having a speaker attached to the audio amplifier until I setup my mag pulser rig (more on it later). It enables one to monitor the volume, to make sure the unit has not flipped out because the volume was too high, and to find the upper limit for the volume setting of the audio amp before it starts 'sputtering.'
You can see that he's getting lots of pulses by the way the metal washer bounces around.
Yep, good specs here, especially on making the coil:
Build a Low cost & simple Magnetic Pulser
He seems to prefer "the natural beat frequency of the Earth magnetic field (9.6 Hz) AND the Schumann waves (7.83 Hz)."
Regarding the use of capacitors (caps) and "a high current SCR" (Silicon Controlled Rectifier), electronics are out of my league. I frankly don't have the time to learn all the ins and outs of ordering, testing, and implementing them.
This was very good, too:
http://www.pemft.net/pemf-book---the-video.html
In his video series, Bryant Meyers quoted many sources making a strong case for using the 0 - 30hz range. He also said that "Too high an intensity can cause harm." I wonder what "too high" is. And how that jibes, or contrasts, with many fantastic testimonials for units such as Klemens' machines.
In fact, there are a few YouTube videos featuring practicioners using the PEMF 4000 machine ($10,999) or similar units on horses and pets. Horse owners don't pay big money for treatments that don't work. Consider these:
A horse trainer with a healing touch
Horse Sense Australia
December 12, 2014
"We have tried the Super Magnetic Pulser on our rescues, including horses and ponies with pain and inflammation from founder and injuries. The machine works well and some horses will even fall asleep during its use. Thanks Anton Klemens for putting us onto this wonderful device from Klemens Health Care Products."
Bryant Meyers quoted a NASA study that said that "1 - 20 uT" gave "maximum results." It sounds like a key bit of information but I have absolutely no idea what it is. How does that mesh with the DIY and commercial units? And how does the average DIYourselfer measure that?
He mentions that all one needs (using the right machine) is 8 minutes twice a day. The mat he keeps referring to is the one that was briefly displayed on the Dr. Oz PEMF episode which appears to be the iMRS 2000 (http://www.imrs2000.com/imrs-pemf-mat/). The policeman who was the guest on the show got incredible results within 2 weeks. I like the 8 minute duration and it seems to jibe with what users of high intensity machines have used to get great results. (They usually state somewhere around a 5 minute application per bodypart.)
Another interesting thing about the PEMF mat is that I'm sure it cannot pulse a metal washer high into the air. Yet it's effective. So in this case, less is better.
The iMRS 2000 unit is so expensive that you have to contact the company to get a price. (The big lie video later showed the price as $4,790.)
Here are the specs for the iMRS 2000:
iMRS 2000: The Pulsed Electromagnetic Field (PEMF) Leader
Technical Specs
Frequency - .5 - 25 Hz
Intensity - .09 uT - 70 uT (Earth Intensity = 33-66 uT)
Graduated Intensity - Yes - 3x Stronger at Feet --Weaker at Head
Biorhythm - 15 Hz - 7.5 Hz - 3 Hz - .5 Hz
Waveform - Sawtooth on Full Body Mat - Squarewave on Pad and Probe
Switches Polarity - Yes, Every Two Minutes
Sound and Light frequencies - Same as Mat, Synchronized for Maximum Benefit
Dimensions Full Body Mat - 25 Inches x 69.5 Inches
Price - Call Us for Pricing or Download Free Brochure
Warranty - 3 Years Unconditional
Shipping - Free to U.S. and Canada
(Hawaii and International Extra - call for pricing)
http://www.imrs2000.com/?gclid=CKat28bTwsQCFUIR7AodoTgAkA
What intrigues me about the iMRS 2000 is that it doesn't have the pulse power (gauss) and thus the depth of magnetic penetration that the Sota mag pulsers do. And it only takes 6 coils to cover the entire body. Which also, according to their graphic, is able to emit its magic easily above a person's body.
My Sota MP5 unit is very powerful and provides deep penetration (9 inches). Yet it has not given me results that I read about with folks who've used the iMRS 2000, the Klemens machines, and others like them. For example, I've mag pulsed my bad shoulder some nights for 30-60 minutes with the Sota MP5 and it hasn't really helped. What's the difference? Pulses per second?
Perhaps jaguar57 nailed it: "I think the PEMF machines mostly have low strength magnetic fields but much more pulses per minute than a Beck Pulser..." I find this to be encouraging as my DIY rig doesn't seem to be oozing a strong gauss (more on this later).
Regarding this video:
PEMF REVIEW The big lie when it comes to the power!
...he seems to make the case for more power, not less. His testing confirmed the efficaciousness of the Curatron 3D System and the PMT 100 units which are very powerful. I wish he had made his point a little clearer.
My friend who's bigtime into electromedicine turned me onto Amazing1.com which has a collection of mag pulsers:
Speaking of low intensity, check these out:
Assisi tPEMF Loop
"Check out the internet cat Lil Bub. She's the living proof that this product does work. She couldn't walk anymore in 2012, she regained that ability, as well as running, jumping and climbing up the stairs. The videos about it just don't lie."
My DIY Audio Amplifier Based Magnetic Pulser
After spending most evenings researching and ordering the parts for an audio amp based mag pulser, I finally put my rig together last night. Here are some pics:
Jantzen 1892 5.0mH 18 AWG Air Core Inductor 255-284
I got this crossover coil from eBay and chose it because it's 5.0mH (millihenry inductance). (The higher the number of mH, the stronger the magnetic field and higher cost.) The Klemens Super T Magnetic Pulser has an "11 milli henry coil rating." Lower mH rating wire was a lot cheaper but I wanted to get something within specs.
"V" (aka blackchisel97) of NVtronics.org did some testing with crossover coils which were "3mH wound with #18 magnet wire." And elsewhere noted:
"The coil can be from 2.5 mH to 10 mH (the higher the greater Inductance Magnetic Field )"
http://www.nvtronics.org/viewtopic.php?f=2&t=24&hilit=12VDC
Btw, the NVtronics forum is very active and is a great resource (though I've not had time to get involved yet).
My Lepai LVPIN LP-2020A+ with crossover coil and speaker connected to my laptop.
The Lepai LVPIN LP-2020A+ has many glowing reviews on the Internet so I thought I'd give it a try. It sold for $22.95 shipped on eBay. (There seems to be a glut of them on eBay which probably accounts for the low price.)
Lepai LVPIN LP-2020A+ with crossover coil
I used a 3.5mm male to 3.5mm male stereo audio cable to connect the amplifier to my laptop.
I used a couple of cable ties to help keep the wiring intact. I've read that the constant barrage of pulsing can cause them to loosen and thus reduce the coil's ability to create a strong magnetic field. I plan to wrap the coil in electrical (or some other) tape as a nick in the enamel coating could cause a shock. I'll probably get rid of the wire nuts and do some tinning and soldering. And I've got to figure out how to attach a handle to it.
I've not been able to ascertain which side is negative. I don't have a compass or a gauss meter but I do have a very powerful neodymium magnet. The coil doesn't attract or repel the magnet like my Sota MP5 does. It just pulses it back and forth. (More so on one side than the other but the difference is neglible.) I guess this is because (speculation) the rapid square waves push and pull the magnet in a give and take movement. If so, then maybe there is no North/negative side to the coil. Until I find out, I'm going to test one side for 5 minutes on various body parts to see the outcome.
My Sota MP5 powerfully attracts it from one side of the paddle and repels it from the other side. But then the Sota unit only pulses every 7 seconds or so.
Multisine V1.74 set to 10hz
This is a free and relatively simple frequency generator. Under the square wave setting, it has options for Frequency (hz), Phase (DEG), L/R Phase Offset (DEG), and Level (dB). Right now I've been experimenting with 10hz and leaving the other options blank because I really don't know what they mean or how they might impact performance.
Frequency is the area that perplexes me. Which hz square wave to use. And if a range or combination of hz square waves is needful.
Based on Bryant Meyers quoted sources, perhaps the sweetspot is somewhere in the 0 - 30hz range. While the iMRS 2000 uses .5 - 25hz. I'd love to hear from one of the Curezone pros as to what the best 'general' square wave setting is.
I tried running frequency generators from my Android (there are a lot of free ones in the Google Play Store) using a square wave but none provided as strong a magnetic field as my laptop does using Multisine. (My laptop must have more audio horsepower.) And when I place a small screw in the middle of the coil, it bounces around like crazy. Cool!
Using my laptop and Multisine, I can only crank the Lepai amp up to about 60% before it starts sputtering. Perhaps it's because there's not enough resistance in the crossover coil. If so, then maybe all I need to do is get a crossover coil with a higher mH rating akin to the 11mH coil in the Klemens unit.
My Jantzen 1892 5.0mH 18 AWG Air Core Inductor 255-284 cost $28.18 shipped.
The Jantzen 1971 12mH 18 AWG Air Core Inductor 255-296 costs $47.40 shipped.
After running my DIY unit for about 15 minutes, the coil eventually gets warm. Nowhere near hot.
Reinventing the Wheel?
One might think that we're trying to reinvent the wheel since we're not going the route of those at NVtronics.org. (Those guys really know their stuff. But they're dealing with PC boards, transformers, diodes, resistors, capacitors, LEDs, soldering, and a myriad of electronic wizardry.) That's taking this to the next level which (I think) is a bit more than the casual DIYourselfer wants to get involved in.
Blazing a Trail
I think we're actually blazing a trail because we're trying to make an effective DIY audio amplifier based mag pulser. Which is why there are so many questions. Hopefully we'll find the right mix and make it easier for others to easily make their own mag pulsers so they and their loved ones can reap the benefits.
I'm going to continue tweaking this unit while moving on to the larger 12 volt car battery unit (I've got all the parts now). And I'll fill you in on the answers I got from the gent who used to build them for himself.
So that's it for now. Please let me know if anything is unclear. Any feedback or suggestions is appreciated!
In health,
Paul
P.S. I've made a number of edits to this post since I originally wrote it. So if you read through it before, you might want to refresh the page to see if I've added anything new. Thanks!
Success!
I've got exciting news! I'm so psyched that I couldn't wait to post this. I'll start at the top.
The Monster Magnet
This is the N45 Neodymium Magnet I've been testing my DIY unit with: 1.5 in x 1.5 in x .25 in Rectangular Block. (stock photo - costs approx. $6.00 US)
How Powerful is It?
I have two of them and when you put them near each other, you're going to get pinched bigtime when they suddenly and violently clash together. (I've had the blood blisters to prove it.) And they are impossible to separate unless you know the trick (kinda had to figure it out on my own).
What Purpose Does it Have?
Because it 'amplifies' a magnetic pulse, it's a great low-tech way to test coil output.
The Sota MP5 Magnetic Pulser
My Sota MP5 has recently been having problems with the power button. I emailed Sota and got a super response from Sue. (Kudos!) She checked with her tech and gave me very clear, well written, simple instructions on how to clean a couple of buttons to see if that will resolve the problem. (No geek-speak.)
So since I now have Sota's permission to crack the case without voiding the warranty, I thought I'd disconnect the hand paddle and compare it to my Jantzen 1892 5.0mH 18 AWG Air Core Inductor (coil) using my DIY mag pulser.
Btw, I purchased the Sota MP5 over 12 years ago -- what a workhorse! And they still support repairs for the unit at no charge. As if that's not enough, I was offered a 50% discount on their "new Magnetic Pulser MP6 [which] offers two options – our Regular Mode PLUS the new Fast Mode." And the offer has no time-limit.
You have to hand it to the good folks at Sota. They are a class act! I hope their competition is listening. (Btw, their instructions seem to have worked.)
The Test Setup
I simultaneously hooked both the Sota paddle and the Jantzen coil up to the Lepai LVPIN LP-2020A+ amp and cranked up the Multisine V1.74 frequency generator running a sqare wave at 10hz. (Did I say that out loud? LOL! That wouldn't have come out of my mouth a month ago.)
With both coils connected to the amp, the volume knob tops out at around 47%. (It's usually 60% with just the Jantzen coil hooked up.) Not a bad drop considering I've got 2 killer coils hooked up to it. But I was hoping that by adding the second coil that I could crank it up beyond 60%. I guess the channels work independently of one another. And that each channel needs more resistance or inductance to get beyond the 60% limit.
The Test
The test involved placing the tip of my thumb between the monster neodymium magnet and the face of the North/negative side of each coil. (I assume that the top of Jantzen coil (see earlier photo) is the North/negative side.) Yep, this is a low-tech test but it's all I've got for now. I used this test multiple times between each coil to make sure the results were consistent.
Test Results
The Jantzen coil is noticeably stronger. Without the use of a gauss meter, my best guesstimate is 25% stronger. Sweet!
Another test is using a metal shoehorn. It doesn't shake and shimmer as much as the neodymium magnet but it's still a good test item. It gets slightly more activity from the North/negative side of the Jantzen coil than it does from the Bio-North side of the Sota hand paddle. (The difference with this test is that it doesn't provide as sharp a contrast as the neodymium magnet does but it does confirm the magnet test results which are much clearer.)
Sota Didn't Lose; We Win!
I'm not so much thrilled that the Jantzen coil is stronger than the Sota paddle as I am that all this confirms that I'm on the right track with the entire DIY setup. Praise the Lord! (I believe in giving credit where credit is due. And that it's selfish and hypocritical to ask the Almighty for help and not give Him credit and glory when He answers prayer.)
The Next Step
But my next step is to actually test my DIY mag pulser on some aching bodyparts. (I haven't had the time yet but with these test results, I'm going to get right on it!) As they say, "The proof of the pudding is in the eating."
In health,
Paul
For some reason I am now able to crank the Lepai LVPIN LP-2020A+ amp up to 100% while hooked up to the Jantzen coil. (Yesterday the max was 60%.) And it didn't take but a few minutes to get hot (a first). Sweet!
The trick seems to be to turn the amp on, crank it up to 100%, and ignore it as it kicks 'off' then back 'on' again (this will happen a few times). (You can hear it click when it does this.) It will shortly stay 'on' and remain so without kicking 'off' again. An indicator that it is 'on' is that the blue illuminated ring outside of the volume knob will rapidly flicker.
I don't know if this is a good thing or if the amp is acting up. At $22.95, I'll take my chances.
Also, I Googled whether or not it's okay to leave one channel of the amp without anything hooked up to it and the general consensus is that it shouldn't be a problem. (Whew!)
At 100%, I get 10 minutes of use before it gets hot and is too uncomfortable to hold. I still don't have a handle for it but the excess heat causes resistance. So it's best to stop and let it cool down - which fortunately doesn't take long. (Btw, users have reported that the Klemens Super P Magnetic Pulser gets hot after about 10 minutes. So this is another good sign for this DIY unit.)
Fascinating stuff!
Now that this setup seems to be stable and working well, I went back to testing some frequency generator apps on my Android HTC Incredible. (I've got a hankerin' for a somewhat more portable setup.)
I've got four of them installed and the one that produced the best results (which was also very close in intensity to my laptop and Multisine V1.74 combination) was the Frequency Sound Generator app. The interface is very user-friendly and it has never acted flaky. I tested it with a square wave at 10hz in loop mode. Nice! (Your mileage may vary.)
You can get it free at the Google Play Store.
I don't need any of the Pro features but because I really like (and need) this app, I went ahead and made a donation.
I should have said: I assume that the bottom of Jantzen coil (see earlier photo) is the North/negative side.
But after thinking about it, I doubt that a north or south side even exists. The mag pulsers (like the Beck Pulser and the Sota mag pulser) use a transformer and a capacitor to send forth a pulse of electricity to the coil. This creates a magnetic pulse which has a north and a south field.
But the audio amp version we're discussing is not that type and thus doesn't have a north or south side. Which would explain why the coil neither repels nor attacks my neodymium magnet. Rather, it causes an on/off or to/fro motion.
I think this confirms it:
"A pulse wave is a type of waveform. In particular, it is one that only has two possible states: on or off. ... A square wave is one example of a pulse wave. To be exact, a square wave is a pulse wave which spends exactly the same amount of time in the off position as it does in the on position."
http://bytenoise.co.uk/Pulse_wave
The fact that we're dealing with frequencies and not huge bursts of energy explains why thousands of pulses per minute can be sent to the coil.
The more I learn, the more I realize I don't know much.
Hi Esstee,
I can certainly relate to your time constraints. Thanks for the tip for creating a 1/2 wave.
I don't know much about Spooky2 nor Rife machines but it sounds like there's a lot of benefit to be had from its use. Here's a Facebook Spooky2 page.
And here's a Curezone post on someone's experience with Spooky2.
This is an awesome post:
"Agriculturists have used spooky2 to heal one plant in a field of suffering plants and healed it and then saw that the entire field had healed. The idea is that quantum entanglement contact in one place affects all other places that that DNA is in. So, it can also affect your own entire family where that DNA is shared, wherever the members are."
I can see why this technology is so fascinating. Did you order one or are you considering purchasing one? Or maybe even building one?
I've been testing my DIY audio mag pulser using my Android and the smaller crossover coil. At this point, I really don't think it's doing anything (other than getting real hot after 4+ minutes).
I finally completed the larger coil for the 12 volt car battery setup but the audio amp overloads at about 40%. (There's not much resistance to it.) It doesn't get hot no matter how long I run it but I don't think it's accomplishing much either. Perhaps it'll do better with the 12 volt battery.
It's #10 solid core, 47', 5.75" ID (inside diameter). I wanted as much induction as possible which is why I opted for a thicker but smaller coil.
I cleaned the coil and cable ties thoroughly using rubbing alcohol. Then taped it up with electrical tape to prevent the wire from getting nicked. It has a nice, heavy feel to it. (I'll include more details on the specs I got from the gent who actually built some 12 volt battery mag pulsers.) I think I paid $17 shipped on eBay for the wire.
If it turns out that it works its PEMF magic with the 12 volt car battery, I'm going to get a longer #10 spool of wire to make a coil with a bigger ID as this one barely fits over my shoulder. Maybe 100' will do.
On another note, this Physics and Clinical Evidence of BioElectronics V91 pdf (96 pages) deals with mag pulsers that use RF energy.
I first saw an RF energy reference to a PEMF device in a PetPatch Loop ad.
How PetPatch Loop Works
"The PetPatch Loop uses modulated radio frequency (RF) to induce a low frequency electric field in the tissue. Because the therapy is placed right on the skin, we are able to use a lower energy field than traditional machines. PetPatch Loop units emit a 27.1 MHz RF shortwave modulated at 1 KHz using 100 microsecond pulses. The RF waves create an induced electrical field in the damaged tissue in an eddy pattern that restores the normal cell metabolism. This innovative modulated therapy packs the healing of big pulsed electromagnetic field (PEMF) systems into a low power wearable and affordable patch. There is no perceptible sensation from the treatment. The area of effective treatment of a device mirrors the size and shape of the area of the patch or antenna."
I ran this by my electronics friend. He wasn't familiar with it and said, "What it sounds like to me is take a CB RADIO, put the antenna on your body, turn it on, and YIKES. 27.1 Mhz is right where the CB'erz yak."
But this Physics and Clinical Evidence of BioElectronics V91 document seems to lend great credibility to it. (I'll have to finish reading it.)
The PetPatch Loop seems to be the same animal as the ActiPatch from the UK. (I think we touched on these earlier.) Both are good for up to 720 hours and the battery is supposedly not changeable or rechargeable.
Good before and after photos of diabetic wounds healed with Low-Level Pulsed Radiofrequency Fields and the Treatment of Soft-Tissue Injuries
Holding the coil with my bare hand had limitations that required creating a handle. (I couldn't reach certain areas easily such as my upper back and rear delt. And the coil would get too hot to hold onto.)
Not being a handyman like many here, I simply took a wooden dowl rod, cut it to approx. 10 inches, used cable ties to strap the coil to each rod and another to tie the base of the rods together. Then taped it up with some white duct tape.
The handle enables me to use it more often than I have since creating this setup. You see, the coil gets too hot to hold with my bare hands after about 4.5 minutes. But with the 'protection' of the handle, I can run it for probably twice that amount of time before the audio amp overloads and shuts down. Thus the handle buys me more treatment time.
At this point both my wire connections are made using wirenuts. Kinda keeps things simple and easy to work with for the time being.
I just started using an PetPatch Loop today (it's the same as the ActiPatch). I've found the best way to attach it to my body is with medical paper tape. (The best price I found was a $1 for 1" x 10 yards at Dollar Tree.) The tape will stick pretty good if you first clean your skin with rubbing alcohol. And if you're appying the unit to an odd shaped area such as your shoulder, you may need quite a few strips of tape to hold it in place.
If you don't have medical paper tape handy, painters 'blue tape' works fairly well and comes off easily though I wouldn't trust using it long-term because there might be some nasty chemicals in the glue.
Here are a ton of great testimonials from ActiPatch users: http://actipatch.com/testimonials/ And 18 are from Fibro sufferers!
And there are many more on Amazon.
Don't throw your old unit away!
I'd like to take the coil from one or more dead ActiPatch or PetPatch Loops and solder them in series to mine to make the loop bigger to see if it would still be effective. As it is, the coverage area is small. It would be great to slip my arm or leg into the loop.
If you have one that's dead, please contact me (mashiach-at-swbell-dot-net) and I'll be glad to work something out with you. Thanks!
I finally completed building a DIY mag pulser similar to the ones in my original post.
Initially all wiring was 14 gauge stranded (white) wire. I thought that would be sufficient for starters.
As soon as I hooked the unit up to my 12 volt car battery, I determined which side was negative by using a strong neodymium magnet. The pulse was strongest in the center of the coil. (In fact, it was much stronger than from my Sota MP5.) I was expecting the strongest area to be on the "surface" like the Sota mag pulser's paddle. This discovery time took about 9 seconds.
I then placed the coil over my right shoulder (which has some tendon or ligament damage) and proceeded to press the horn button as fast as I could. During the 11 seconds that I pulsed it, I probably got in about 19 pulses before I had to stop. Here's why.
As I was pulsing, I checked the wiring and noticed that most, if not all, of it was getting hot. After a total time of about 20 seconds, they were probably on the verge of melting. The clamp to the positive post was so hot that it took a few minutes for it to cool down before I could disconnect it.
The coil itself was getting warmer by the moment. (At least it was wired correctly and didn't shock me or burn anything up.) After I stopped pulsing my shoulder, I couldn't tell that anything had happened, good or bad.
So I upgraded it using a small set of jumper cables that I had on hand from Advance Auto Parts: AutoCraft Booster Cables, Power Sports, 10 Gauge, 10FT for $9.99. I was able to swap out all the wires except the ones for the horn button. I'll probably go back and get another set of jumper cables to complete the transition. But I haven't tested this upgraded unit yet (though I want to). Here's why.
A few hours after getting up the next morning, my right shoulder started to hurt. Right at the bony tip. And it continued to hurt for a few more days.
I don't know if the center of the coil where that part of my shoulder was inserted has some strange mix of polarity. Or if the unit is just too powerful. Or if this is some sort of "healing reaction." Or maybe it broke up some scar tissue and/or adhesions. But at this point I'm unwilling to test it on anything that's hurting lest it make it even worse.
I'm wondering if anyone has any knowledge of mag pulsers being too strong. I Googled it but couldn't find anything.
I had considered running this by the gent who helped me design the coil but as you can see from the photos above, the coils he and Robb Allen worked with did not use magnet wire. And as such, probably didn't provide as much gauss.
If and when I do give the upgraded unit a whirl, I'll make sure to use the "surface" and not insert any bodyparts into the center of the coil.
Auto Supply Parts:
Dorman - Conduct-Tite Electrical Switches - Specialty - Horn Button Flush Mount $3.99
CARQUEST by BWD Starter Solenoid $19.99
AutoCraft Booster Cables, Power Sports, 10 Gauge, 10FT
Drolet's 1990 Rhumart system PEMF device. You can really zoom in for greater details.